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revision 1987, Tue Jul 10 19:31:18 2007 UTC revision 2159, Sat Mar 29 08:09:05 2008 UTC
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1    2008-03-29  Martin Maechler  <maechler@stat.math.ethz.ch>
2    
3            * DESCRIPTION (Version): 0.999375-9 --- need to release
4            for R-devel (and R 2.7.0 alpha soon).
5    
6            * R/sparseMatrix.R (summary): count NAs
7    
8    2008-03-28  Martin Maechler  <maechler@stat.math.ethz.ch>
9    
10            * R/AllGeneric.R: rcond(., norm) instead of rcond(., type), in
11            order to become compatible to new R 2.7.0 base::rcond().
12    
13    2008-03-25  Martin Maechler  <maechler@stat.math.ethz.ch>
14    
15            * DESCRIPTION (Version,Date): 0.999375-8 --- released to CRAN
16    
17            * R/diagMatrix.R (Ops): fix newly introduce bug in <.di> o <numeric>
18    
19            * inst/test-tools.R (isValid): new utility, used much in
20            * tests/simple.R:
21    
22            * man/BunchKaufman-methods.Rd: added too
23    
24    2008-03-24  Martin Maechler  <maechler@stat.math.ethz.ch>
25    
26            * R/dsyMatrix.R: add BunchKaufman() methods.
27            * R/dspMatrix.R:
28    
29            * src/init.c: add dsyMatrix_trf
30    
31    2008-03-23  Douglas Bates <bates@stat.wisc.edu>
32    
33            * DESCRIPTION (Version): release 0.999375-7
34            * src/CHMfactor.c (CHMfactor_update): fix
35    
36    2008-03-22  Martin Maechler  <maechler@stat.math.ethz.ch>
37    
38            * src/dsCMatrix.c (dsCMatrix_LDL_D): cleanup, also using
39            internal_chm_factor().
40    
41            * R/AllGeneric.R: do *not* define a "chol" generic
42                    (but rather use the implicit one *without* making pivot
43                    part of the signature)
44            * R/*.R: drop the 'pivot' from chol's signature and make
45                    'pivot=FALSE' a default argument of method definitions.
46    
47            * .Rbuildignore: add 'wrld_1deg': I.e. do not put it into released
48            version of Matrix
49    
50    2008-03-18  Martin Maechler  <maechler@stat.math.ethz.ch>
51    
52            * R/Tsparse.R (.T.2.n): drop 0's before coercion to "nMatrix"
53    
54            * R/sparseMatrix.R (is.na): new simple method
55            * R/denseMatrix.R (is.na): ditto.
56    
57            * R/diagMatrix.R (.symDiagonal): newly exported utility.
58    
59            * R/diagMatrix.R (Ops): <diag> * <numeric> should not become dgeMatrix!
60    
61            * src/UFsparse_download.sh: -->
62            * src/CHOLMOD/: update to CHOLMOD version 1.6 (Nov.2007)
63    
64    2008-03-17  Martin Maechler  <maechler@stat.math.ethz.ch>
65    
66            * src/dsCMatrix.c (dsCMatrix_LDL_D): even faster utility with same
67            functionality; barely tested in
68            * tests/factorizing.R
69    
70            * src/Csparse.c (diag_tC): new functionality to enable faster
71            determinant(<dsCMatrix>, .) in
72            * R/dsCMatrix.R
73    
74    2008-03-17 18:53  Douglas Bates <bates@stat.wisc.edu>
75    
76            * R/CHMfactor.R, inst/include/Matrix.h, inst/include/Matrix_stubs.c,
77              src/CHMfactor.c, src/CHMfactor.h,
78              man/CHMfactor-class.Rd, src/init.c, tests/factorizing.R:
79              Log-determinant of the parent matrix from a CHMfactor object as
80              chm_factor_ldetL2; documentation and support
81    
82    2008-03-15  Martin Maechler  <maechler@stat.math.ethz.ch>
83    
84            * R/dsCMatrix.R: enable determinant(<dsCMatrix>, .) via chol(.)
85    
86    2008-03-14  Martin Maechler  <maechler@stat.math.ethz.ch>
87    
88            * R/dsCMatrix.R: setAs(., "dsCMatrix") but with a deprecation
89            warning.
90    
91    2008-03-13  Martin Maechler  <maechler@stat.math.ethz.ch>
92    
93            * DESCRIPTION (Version, Date): bug-fix release 0.999375-6
94    
95            * R/diagMatrix.R (diag2tT.u): utility to be smarter in
96              <diagonal> o <sparse_triangular>
97              setAs(., "nMatrix") added.
98    
99            * R/diagMatrix.R (Diagonal): Diagonal(4, x=3) now works too
100    
101            * R/Auxiliaries.R (.diagU2N): more careful coercion in 2 steps
102                    new argument 'checkDense = FALSE'.
103    
104    
105    2008-03-07  Martin Maechler  <maechler@stat.math.ethz.ch>
106    
107            * src/dgeMatrix.c (dgeMatrix_exp): fix the octave-origin bug in the
108            back-permutation of the matrix exponential.
109    
110            * tests/matr-exp.R: test the fix (for an example where expm() was wrong).
111    
112            * DESCRIPTION (Date,Version): ready to release 0.999375-5
113    
114            * tests/simple.R: testing diagN2U
115    
116    2008-03-06  Martin Maechler  <maechler@stat.math.ethz.ch>
117    
118            * R/Auxiliaries.R (diagN2U): interface to
119    
120            * src/Csparse.c (Csparse_diagN2U): .Call()able SEXP version of chm_diagN2U()
121    
122            * tests/matprod.R: test for triangularity preserving <dtC> %*% <dtC>
123    
124    2008-03-05  Martin Maechler  <maechler@stat.math.ethz.ch>
125    
126            * src/chm_common.c (chm_diagN2U): new utility.
127    
128            * src/Csparse.c (Csparse_Csparse_crossprod, Csparse_Csparse_prod):
129            make use of chm_diagN2U() and hence now preserve triangularity and
130            unit-triangularity.
131    
132            * DESCRIPTION (LicenseDetails): new; such that 'License:' becomes "canonical"
133    
134    2008-03-04  Martin Maechler  <maechler@stat.math.ethz.ch>
135    
136            * R/diagMatrix.R (subDiag): fix when x[..] became a vector
137    
138            * src/Tsparse.c (Tsparse_diagU2N): new utility, necessary for e.g.
139            * src/Csparse.c (Csparse_crossprod): use [CT]sparse_diagU2N() !!
140    
141            * R/Auxiliaries.R (.diagU2N): make use of new Tsparse_diagU2N
142    
143            * R/Ops.R ("-" (<sparseMatrix>)): use diagU2N()
144    
145            * src/chm_common.c (AS_CHM_FINISH): add note about problem
146            for triangular (diag = "U").
147    
148    2008-02-21  Martin Maechler  <maechler@stat.math.ethz.ch>
149    
150            * R/Auxiliaries.R (as_Csparse2): drop this, replacing by
151            * R/bind.R:  .Call(dense_to_Csparse, *)
152    
153    2008-02-20  Martin Maechler  <maechler@stat.math.ethz.ch>
154    
155            * R/Matrix.R (Matrix): no longer use coercions to specific classes
156                    (since we are discouraging them in user code).
157    
158            * tests/*.R: also replaces coercions to specific classes by
159            coercions to super classes.
160    
161            * R/denseMatrix.R (.dense2C): simplified by using forceSymmetric()
162    
163    
164    2008-02-19  Martin Maechler  <maechler@stat.math.ethz.ch>
165    
166            * man/CAex.Rd: example: coerce to symmetric*, not dsC*
167    
168            * src/dense.c (dense_band): generalized from ddense_band
169    
170            * R/ddenseMatrix.R (.trilDense,.triuDense, .bandDense):
171              now for "denseMatrix" (instead of just "ddense*"); much
172              simplified setMethod()s for these.
173    
174            * src/dense.c (dense_to_symmetric): generalized from ddense_*
175    
176    2008-02-18  Martin Maechler  <maechler@stat.math.ethz.ch>
177    
178            * R/AllGeneric.R: forceSymmetric() generic: fast no-checking
179            version of as(*, "symmetricMatric").
180    
181            * src/dense.c (ddense_to_symmetric): add 'symm_test' argument, and
182            * R/symmetricMatrix.R: set it TRUE in coercion to "symmetricMatrix"
183    
184    2008-02-16  Martin Maechler  <maechler@stat.math.ethz.ch>
185    
186            * R/Matrix.R (subset.ij): utility, as first step to faster
187               M [ <ij-matrix> ] indexing.
188    
189            * R/Matrix.R (.M.sub.i.logical): M[ <logical> ] : try better.
190    
191            * src/dense.c (ddense_symmpart, ddense_skewpart): new functions
192            for more efficient symmpart() and skewpart() methods.
193    
194            * src/Mutils.c (equal_string_vectors): utility
195    
196            * src/dense.c (ddense_to_symmetric): new function used in
197    
198            * R/symmetricMatrix.R: setAs(., "symmetricMatrix")
199    
200            * R/sparseMatrix.R, et_al (isSymmetric): add '...' to formals, in
201            order to match the generic (and evade .local(..)).
202    
203            * R/dsCMatrix.R: dgC -> dsC: use C code!
204    
205            * NAMESPACE, R/AllGeneric.R (symmpart, skewpart): new functions
206            as per TODO
207    
208            * R/Auxiliaries.R (setZero, all0Matrix): new utilities
209    
210            * R/symmetricMatrix.R: obvious symmpart(), skewpart() methods
211    
212    
213    2008-02-15  Martin Maechler  <maechler@stat.math.ethz.ch>
214    
215            * R/Ops.R (.Arith.Csparse): use diagU2N when needed in triangular
216    
217            * R/Auxiliaries.R (non0.i): take out of non0ind
218    
219            * R/ddenseMatrix.R (.trilDense, .triuDense, .bandDense):
220            make tril(), triu(), band() work for "matrix" and all "dense*"
221    
222            * R/triangularMatrix.R (.tri[lu].tr): need .diagU2N(*)
223            * tests/simple.R: test the fix above
224    
225            * R/sparseMatrix.R ([): simplification: no coerce to <general>
226                    before we use as(., <Tsparse>)[...] anyway
227    
228            * R/Rsparse.R (.viaC.to.R): mostly instead of .viaC.to.dgR()
229    
230            * R/triangularMatrix.R (isTriangular): methods for all subclasses
231            instead of "triangularMatrix" -- just to disambiguate
232    
233    2008-02-14  Martin Maechler  <maechler@stat.math.ethz.ch>
234    
235            * tests/Class+Meth.R (dotestMat): add m[FALSE, FALSE] { <-> TODO}
236            * tests/indexing.R: example that fails above
237    
238    2008-01-26  Martin Maechler  <maechler@stat.math.ethz.ch>
239    
240            * R/Matrix.R (.M.sub.i.2col): fix for logical matrix indexing
241            * R/Tsparse.R (.TM.sub.i.2col, .TM.repl.i.2col): ditto;
242                    now, M[lower.tri(M)] and  M[lower.tri(M)] <- v  work better
243    
244            * src/Tsparse.c (Tsparse_to_tCsparse): new fast utility.
245            * src/Tsparse.h, init.c: ditto
246            * R/Auxiliaries.R (isTriT): new; faster than going via Csparse
247                 both isTriC() and isTriT() now return TRUE with "kind" or FALSE.
248            * R/sparseMatrix.R (isTriangular): hence simplified
249    
250    2008-01-24  Martin Maechler  <maechler@stat.math.ethz.ch>
251    
252            * R/Ops.R (.Arith.Csparse): new utility factored out of former
253              <dgC> o <dgC>, extended for triangular and also used in  <dtC> o <dtC>.
254    
255    2008-01-23  Martin Maechler  <maechler@stat.math.ethz.ch>
256    
257            * tests/factorizing.R (checkSchur): and more tests for checking Schur()
258    
259            * inst/test-tools.R (isOrthogonal): new function; also file restructured
260    
261    2008-01-22  Martin Maechler  <maechler@stat.math.ethz.ch>
262    
263            * R/ngTMatrix.R: allow as(<numeric matrix>, "ngTMatrix") and hence
264            coercion to "nMatrix" and "pMatrix"
265    
266            * R/AllClass.R: "Schur" class;  "number" class union
267            * man/number-class.Rd:
268            * man/Schur-class.Rd:
269    
270            * R/eigen.R (.dgeSchur): utility, and return "Schur" class
271            (.simpleSchur): Schur() method for diagonal matrices
272            (.triSchur):    Schur() method for triangular matrices
273            (Schur.sym):    Schur() for symmetric matrices {building on eigen()}.
274    
275    
276    2008-01-21  Martin Maechler  <maechler@stat.math.ethz.ch>
277    
278            * src/dgCMatrix.c (dgCMatrix_QR): set @Dim slot (as per doc)
279    
280    2008-01-15  Martin Maechler  <maechler@stat.math.ethz.ch>
281    
282            * R/CHMfactor.R (solve): method for b="numeric", but also b="ANY"
283                    in order to ensure 'system = *' is not lost;
284                    formals()$system instead of cut&paste.
285            * tests/factorizing.R: test solve(<CHM..>, <numeric>)
286    
287    2008-01-11  Martin Maechler  <maechler@stat.math.ethz.ch>
288    
289            * DESCRIPTION (Date): make ready for release --> 0.999375-4
290    
291            * R/dgeMatrix.R: fix rcond() method for "dgeMatrix".
292    
293    2007-12-08  Martin Maechler  <maechler@stat.math.ethz.ch>
294    
295            * R/pMatrix.R: as(*, "matrix") now returns 0/1 *integer* matrix,
296                    and hence does as.vector(.).
297            * man/pMatrix-class.Rd: docs
298            * R/sparseMatrix.R: fix for printing "integer sparse"
299    
300            * tests/Class+Meth.R (tstMatrixClass): test M[FALSE], M[2] etc
301    
302            * R/Matrix.R and others: use "exact" function argument list for
303                    both "["   : (x, i,j, ..., drop)
304                    and  "[<-" : (x, i,j, ..., value)
305    
306            * R/denseMatrix.R: M[i] and M[i] <- v  (i vector) now work
307            * R/Tsparse.R (replTmat):    ditto
308            * R/diagMatrix.R (replDiag): ditto
309            * R/Csparse.R (replCmat):    ditto {was it worth the pain?}
310            * tests/indexing.R: testing the above
311    
312    2007-12-07  Martin Maechler  <maechler@stat.math.ethz.ch>
313    
314            * R/sparseMatrix.R (cov2cor): method for sparse matrices
315    
316            * R/diagMatrix.R ([<-): fix   D[ cbind(i,j) ] <- v
317    
318            * R/bind2.R: fix for Rsparse* and rbind2(dense,dense)
319    
320            * tests/Class+Meth.R: test cbind2, rbind2  and  diag<-
321    
322    2007-12-06  Martin Maechler  <maechler@stat.math.ethz.ch>
323    
324            * R/Matrix.R: "generic" cov2cor() method
325    
326            * R/nearPD.R: new 'only.values', 'keepDiag' arguments;
327                    speed up Q %*% D %*% t(Q)
328            * tests/dpoMatrix.R: test nearPD()
329    
330    2007-12-05  Doug Bates and Martin Maechler
331    
332            * R/sparseMatrix.R: xtabs(*, sparse=.) function; an extention of
333            stats::xtabs() allowing to create sparse matrices.
334    
335    2007-10-08  Martin Maechler  <maechler@stat.math.ethz.ch>
336    
337            * DESCRIPTION (Version): *-4 (released *-3 two days ago)
338    
339    2007-10-06  Martin Maechler  <maechler@stat.math.ethz.ch>
340    
341            * R/pMatrix.R: solve(<Matrix>, <pMatrix>)
342    
343    2007-10-05  Martin Maechler  <maechler@stat.math.ethz.ch>
344    
345            * R/LU.R: solve() method for "denseLU"
346    
347    2007-10-01  Martin Maechler  <maechler@stat.math.ethz.ch>
348    
349            * DESCRIPTION (Version): 0.999375-3 preparing for release
350    
351            * R/AllGeneric.R: simplify  if(.) .. else .. for R <= 2.5.1
352    
353            * R/Matrix.R (Matrix): .Internal(matrix(..)) different for R >= 2.7.0
354    
355    2007-09-26  Martin Maechler  <maechler@stat.math.ethz.ch>
356    
357            * R/pMatrix.R (.m.mult.pMat): fix <matrix> %*% <pMatrix>,
358              thanks to Kasper Kristensen.
359            * tests/matprod.R: regression test for that.
360    
361    2007-09-23 17:32  Douglas Bates <bates@stat.wisc.edu>
362    
363            * [r4778] R/AllGeneric.R: Check R version before defining generics for
364              primitives
365    
366    2007-09-13  Martin Maechler  <maechler@stat.math.ethz.ch>
367    
368            * R/denseMatrix.R (rcond): method
369            * R/sparseQR.R (rcond): method, use x or t(x)
370    
371    2007-09-12  Martin Maechler  <maechler@stat.math.ethz.ch>
372    
373            * R/dgeMatrix.R (rcond): method: work via qr.R() for non-square
374            matrices.
375            * R/sparseMatrix.R: Ditto for all other rcond() method definitions.
376    
377            * man/rcond.Rd: mention the more general definition, and add
378            example for non-square matrices.
379    
380            * man/chol.Rd: new file, for the S4 chol() generic and all methods.
381    
382    2007-09-11  Martin Maechler  <maechler@stat.math.ethz.ch>
383    
384            * R/sparseQR.R: add qr.R() method [to be used for rcond()]
385    
386    2007-09-01  Martin Maechler  <maechler@stat.math.ethz.ch>
387    
388            * R/Matrix.R ([<-): add (Matrix,missing,ANY,Matrix) etc
389            * tests/indexing.R: add new regression for the above cases.
390    
391    2007-08-30  Martin Maechler  <maechler@stat.math.ethz.ch>
392    
393            * src/Mutils.h (__sun): clause for alloca.h on Solaris
394    
395    2007-08-16  Martin Maechler  <maechler@stat.math.ethz.ch>
396    
397            * DESCRIPTION (Date, Version): 0.999375-2
398    
399    2007-08-15  Martin Maechler  <maechler@stat.math.ethz.ch>
400    
401            * R/HBMM.R (readMM): make work for pattern matrices as well
402    
403    2007-08-14 13:07  Douglas Bates <bates@stat.wisc.edu>
404    
405            * [r4730] src/Mutils.h: declare alloca
406            * [r4734] NAMESPACE, R/AllGeneric.R, R/Csparse.R, R/HBMM.R, R/Tsparse.R,
407              R/dgCMatrix.R, R/dgTMatrix.R, R/dsCMatrix.R, R/dsTMatrix.R,
408              man/externalFormats.Rd, src/Csparse.c, src/Csparse.h, src/DEPS.mkf,
409              src/HBMM.c, src/HBMM.h, src/Mutils.h, src/SOURCES_C.mkf, src/init.c,
410              src/mmio.c, src/mmio.h: Remove deprecated function writeHB and its
411              methods; switch writeMM to use CHOLMOD code; repair readMM
412    
413    2007-08-14  Martin Maechler  <maechler@stat.math.ethz.ch>
414    
415            * R/nearPD.R, man/nearPD.Rd (nearPD): new function built on Jens
416            Oehlschlaegel's ... result type still to be discussed!
417    
418    2007-08-10  Martin Maechler  <maechler@stat.math.ethz.ch>
419    
420            * man/image-methods.Rd: new, combining all image() methods
421    
422    2007-08-09  Martin Maechler  <maechler@stat.math.ethz.ch>
423    
424            * R/dgCMatrix.R: define qr() and lu() methods for "sparseMatrix"
425            to work via dgC...
426    
427            * R/Matrix.R (Matrix): special treatment for "table" (S3)
428    
429    2007-08-07  Martin Maechler  <maechler@stat.math.ethz.ch>
430    
431            * R/dgTMatrix.R (image): change defaults to
432                    aspect = "iso", colorkey = FALSE
433    
434    2007-08-06  Martin Maechler  <maechler@stat.math.ethz.ch>
435    
436            * src/dsyMatrix.c (dsyMatrix_matrix_mm): 'b' might be matrix;
437            must copy its *expanded* x slot before LAPACK call.
438    
439            * tests/matprod.R: test the last days' changes.
440    
441    2007-08-06 16:43  Douglas Bates <bates@stat.wisc.edu>
442    
443            * [r4712] inst/include/Matrix_stubs.c: Change R_cholmod_printf in stubs
444              as well as in sources
445            * [r4713] src/dsyMatrix.c: Duplicate the contents of the RHS before
446              Lapack call
447    
448    2007-08-03  Martin Maechler  <maechler@stat.math.ethz.ch>
449    
450            * R/Matrix.R (%*%, crossprod, tcrossprod): add method for
451                    ("Matrix", "matrix") which is needed in some cases.
452            Ditto for solve().
453    
454            * R/colSums.R (.as.dge.Fun): need ddenseMatrix methods to avoid
455            infinite recursion in dispatch for some cases.
456    
457    2007-08-02 08:48  Martin Maechler <maechler@stat.math.ethz.ch>
458    
459            * [r4693] src/chm_common.c: R_cholmod_printf() instead of Rprintf() just
460              so pointers match
461    
462    2007-08-02  Martin Maechler  <maechler@stat.math.ethz.ch>
463    
464            * DESCRIPTION (Date): set ready for release -- 0.999375-1
465    
466    2007-08-01 15:44  Douglas Bates <bates@stat.wisc.edu>
467    
468            * [r4686] inst/include/Matrix.h, inst/include/Matrix_stubs.c,
469              src/chm_common.c, src/chm_common.h: Change API for
470              numeric_as_chm_dense and N_AS_CHM_DN
471    
472    2007-08-01  Martin Maechler  <maechler@stat.math.ethz.ch>
473    
474            * src/dtrMatrix.c (dtrMatrix_matrix_mm): fix dimensionality check (!)
475            * tests/matprod.R: regr.test for it
476    
477    2007-07-20  Martin Maechler  <maechler@stat.math.ethz.ch>
478    
479            * R/dMatrix.R: fix from Brian for   Math2(., digits = "missing")
480            * tests/group-methods.R: and regression-test it
481    
482    2007-07-19 19:45  Douglas Bates <bates@stat.wisc.edu>
483    
484            * [r4642] inst/include/Matrix.h, inst/include/Matrix_stubs.c,
485              inst/include/cholmod.h, src/chm_common.c, src/init.c: Export
486              triplet_to_sparse, documentation, use typedefs
487    
488    2007-07-18  Martin Maechler  <maechler@stat.math.ethz.ch>
489    
490            * man/dpoMatrix-class.Rd: added 'corMatrix' example
491    
492            * src/dsyMatrix.[ch] (dsyMatrix_as_matrix): new 'keep_dimnames' arg
493            * src/dtrMatrix.[ch] (dtrMatrix_as_matrix): ditto
494            * src/init.c, R/dsyMatrix.R, R/dtrMatrix.R, R/lgTMatrix.R: ditto
495    
496            * R/lsparseMatrix.R: bug fix in "all" method
497            * R/Ops.R (.do.Logic.lsparse): "|" bug in borderline case
498    
499            * R/dsyMatrix.R (coerce->dsTMatrix): (i,j) slots should *not* have names
500            * R/ngTMatrix.R (coerce->ngTMatrix): ditto;
501                    + matrix |-> nMatrix coercion
502            * R/pMatrix.R: + setAs()  to dMatrix and from nMatrix
503            * man/pMatrix-class.Rd: ditto
504    
505            * R/Matrix.R (Summary): method for non-dMatrix
506    
507            * tests/Class+Meth.R (extraValid): new check about "dirty" slots
508            * tests/Class+Meth.R (tstMatrixClass): test norm(.);
509                    test all Summary methods.
510    
511    2007-07-16  Martin Maechler  <maechler@stat.math.ethz.ch>
512    
513            * R/dgeMatrix.R (norm, rcond): methods for 'matrix'
514    
515    2007-07-14  Martin Maechler  <maechler@stat.math.ethz.ch>
516    
517            * R/sparseMatrix.R (norm): simple methods for sparseMatrix
518    
519            * R/pMatrix.R (t?crossprod): methods for pMatrix
520    
521  2007-07-10  Douglas Bates  <bates@stat.wisc.edu>  2007-07-10  Douglas Bates  <bates@stat.wisc.edu>
522    
523          * src/dgeMatrix.c (dgeMatrix_colsums): Get the logic straight.          * src/dgeMatrix.c (dgeMatrix_colsums): Get the logic straight.
# Line 5  Line 525 
525  2007-07-09 20:45  Douglas Bates <bates@stat.wisc.edu>  2007-07-09 20:45  Douglas Bates <bates@stat.wisc.edu>
526    
527          * [r4579] src/dgeMatrix.c: Untangle horrible code in dgeMatrix_colsums          * [r4579] src/dgeMatrix.c: Untangle horrible code in dgeMatrix_colsums
528            to fix a subtle bug (Kurt Hornik and Ingo Feinerer)            trying to fix a subtle bug - which has been somewhere else.
529    
530  2007-07-09 19:43  Martin Maechler <maechler@stat.math.ethz.ch>  2007-07-09 19:43  Martin Maechler <maechler@stat.math.ethz.ch>
531    

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